Related

A
typical hell hound stands 4–5 feet tall at the shoulder and weighs 120
pounds. Efficient hunters, a favorite pack tactic is to surround prey
quietly, then attack with one or two hounds, driving prey toward the
rest of the pack with their fiery breath. If the prey doesn't run, the
pack closes in. Hell hounds track fleeing creatures relentlessly.

Hell
hounds are particularly favored by fire giants, as the creatures are
immune to fire and share the fire giant's sense of cruelty when it
comes to handling intruders. Only when a fire giant goes too far toward
treating a relatively intelligent hell hound like a pet do such
alliances begin to falter.